<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>

<h3>使用el表达式</h3>
<!-- el表达式方式 -->
${requestScope.req }
<br />
${pageScope.context }
<br />
${sessionScope.sess }
<br />
${applicationScope.app }
<br />

</body>
</html>